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Orsat J, Guernec A, Le Maréchal C, Pichereau V, Guerrero F. Association between rat decompression sickness resistance, transthyretin single nucleotide polymorphism, and expression: A pilot study. Physiol Rep 2024; 12:e16160. [PMID: 39039431 PMCID: PMC11262998 DOI: 10.14814/phy2.16160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 07/03/2024] [Accepted: 07/11/2024] [Indexed: 07/24/2024] Open
Abstract
Decompression sickness (DCS) is a systemic syndrome that can occur after an environmental pressure reduction. Previously, we showed that the plasmatic tetrameric form of transthyretin (TTR) nearly disappeared in rats suffering DCS but not in asymptomatic ones. In this pilot study, we assessed whether the resistance to DCS could be associated with polymorphism of the gene of TTR. For this study, Sanger sequencing was performed on purified PCR products from the liver of 14-week-old male and female standard and DCS-resistant rats (n = 5 per group). Hepatic TTR mRNA expression was assessed by RT-qPCR in 18-19 week-old male and female standard and resistant rats (n = 6 per group). There is a synonymous single nucleotide polymorphism (SNP) on the third base of codon 46 (c.138 C > T). The thymine allele was present in 90% and 100% of males and females standard, respectively. However, this allele is present in only 30% of DCS-resistant males and females (p = 0.0002301). In the liver, there is a significant effect of the resistance to DCS (p = 0.043) and sex (p = 0.047) on TTR expression. Levels of TTR mRNA were lower in DCS-resistant animals. To conclude, DCS resistance might be associated with a SNP and a lower expression of TTR.
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Affiliation(s)
- J. Orsat
- Laboratoire ORPHY EA 4324Univ BrestBrestFrance
| | - A. Guernec
- Laboratoire ORPHY EA 4324Univ BrestBrestFrance
| | - C. Le Maréchal
- Laboratoire de Génétique Moléculaire et d'Histocompatibilité, CHRU Brest, UMR1078BrestFrance
| | - V. Pichereau
- LEMAR UMR 6539 CNRS/UBO/IRD/IfremerUniv BrestBrestFrance
| | - F. Guerrero
- Laboratoire ORPHY EA 4324Univ BrestBrestFrance
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Saraswathi V, Ai W, Kumar V, Sharma K, Gopal T, Kumar N, Malhi H, Sehrawat T, Desouza CV. A Pilot Study on the Proteomics Profile of Serum Exosome-Enriched Extracellular Vesicles from Normal versus Individuals with Obesity-Related Insulin Resistance. Biomedicines 2024; 12:799. [PMID: 38672154 PMCID: PMC11048419 DOI: 10.3390/biomedicines12040799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 03/26/2024] [Accepted: 03/27/2024] [Indexed: 04/28/2024] Open
Abstract
OBJECTIVE Circulating exosome-enriched extracellular vesicles (EVs) have drawn considerable importance in obesity-related insulin-resistance (IR). We sought to compare the proteomics profile of serum exosomes from normal individuals and those with obesity and IR. METHODS We isolated serum exosomes from male subjects with obesity and insulin resistance (Ob-IR, HOMA-IR > 2.0) and lean/overweight insulin-sensitive (Normal (N), HOMA-IR < 2.0) individuals. The differential protein expression between the two groups was detected by a label-free quantitative mass spectrometry analysis followed by GO annotation and ingenuity pathway analysis (IPA). RESULTS We identified 23 upregulated and 46 downregulated proteins between Ob-IR and N groups. Some of these proteins are involved in altering insulin signaling (VPS13C, TBC1D32, TTR, and ADIPOQ), inflammation (NFκB and CRP), and B-cell proliferation/activation (IGLV4-69, IGKV1D-13, and IGHV4-28). GO analysis revealed that the differentially expressed proteins (DEPs) are mainly involved in regulating immune cell activation and are located in extracellular space. IPA analysis showed that top molecules mediating IR, inflammation and B-cell activation were upregulated in Ob-IR subjects compared to N subjects. CONCLUSIONS Serum exosomal proteins can be used as biomarkers to identify the future risk of diabetes and a therapeutic target to prevent or slow down the progression of diabetes in high-risk individuals.
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Affiliation(s)
- Viswanathan Saraswathi
- VA Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (V.S.); (W.A.); (T.G.); (N.K.)
- Department of Internal Medicine, Division of Diabetes, Endocrinology, and Metabolism, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Weilun Ai
- VA Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (V.S.); (W.A.); (T.G.); (N.K.)
- Department of Internal Medicine, Division of Diabetes, Endocrinology, and Metabolism, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Vikas Kumar
- Department of Genetics Cell Biology & Anatomy, University of Nebraska Medical Center, Omaha, NE 68198, USA; (V.K.); (K.S.)
| | - Kanika Sharma
- Department of Genetics Cell Biology & Anatomy, University of Nebraska Medical Center, Omaha, NE 68198, USA; (V.K.); (K.S.)
| | - Thiyagarajan Gopal
- VA Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (V.S.); (W.A.); (T.G.); (N.K.)
- Department of Internal Medicine, Division of Diabetes, Endocrinology, and Metabolism, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Narendra Kumar
- VA Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (V.S.); (W.A.); (T.G.); (N.K.)
- Department of Internal Medicine, Division of Diabetes, Endocrinology, and Metabolism, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Harmeet Malhi
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA (T.S.)
| | - Tejasav Sehrawat
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA (T.S.)
| | - Cyrus V. Desouza
- VA Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; (V.S.); (W.A.); (T.G.); (N.K.)
- Department of Internal Medicine, Division of Diabetes, Endocrinology, and Metabolism, University of Nebraska Medical Center, Omaha, NE 68198, USA
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Liu L, Gao Y, Yao S. Transthyretin-Regulated Diabetic Retinopathy Through the VEGFA/PI3K/AKT Pathway. Invest Ophthalmol Vis Sci 2024; 65:45. [PMID: 38289614 PMCID: PMC10833055 DOI: 10.1167/iovs.65.1.45] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 01/08/2024] [Indexed: 02/01/2024] Open
Abstract
Purpose Transthyretin (TTR) plays a regulatory role in a variety of diabetes-related diseases. The objective of this work was to probe whether TTR affects diabetic retinopathy (DR) through the VEGFA/PI3K/AKT pathway. Methods High glucose (HG, 25 mM) was used to treat human retinal microvascular endothelial cells (hRMECs) and C57BL/6J mice were intraperitoneally injected with STZ (50 mg/kg) to construct a DR model. In vitro, the effect of TTR on DR was evaluated by measuring hRMEC proliferation, migration, and angiogenesis. The changes in retinal tissue were observed by hematoxylin and eosin staining in vivo. ELISA, immunohistochemistry, and immunofluorescence staining were used to measure VEGFA or CD31 levels. The levels of all proteins were evaluated through Western blot. Results The increase of proliferation, migration, and angiogenesis and decrease of apoptosis in hRMECs caused by HG were notably reversed by TTR. TTR greatly impeded HG-raised VEGFA, PI3K p-p85, and p-AKT in hRMECs. Inhibition of TTR further exacerbated the effect of HG-induced hRMECs. Inhibition of VEGFA reversed the effect of HG-induced hRMECs. VEGFA neutralized the function of TTR on cell proliferation, apoptosis, migration, and angiogenesis in HG-triggered hRMECs. It was further confirmed in vivo that TTR can alleviate the occurrence of DR in diabetic mice models. Conclusions TTR significantly restrained the progression of DR via molecular modulation of the VEGFA/PI3K/AKT axis.
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Affiliation(s)
- Lei Liu
- Tianjin Eye Hospital, Tianjin, P. R. China
- Tianjin Key Lab of Ophthalmology and Visual Science, Tianjin, P. R. China
| | - Yanlin Gao
- Tianjin Eye Hospital, Tianjin, P. R. China
- Tianjin Key Lab of Ophthalmology and Visual Science, Tianjin, P. R. China
| | - Shiqi Yao
- Tianjin Eye Hospital, Tianjin, P. R. China
- Tianjin Key Lab of Ophthalmology and Visual Science, Tianjin, P. R. China
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Aerobic Exercise Prevents Chronic Inflammation and Insulin Resistance in Skeletal Muscle of High-Fat Diet Mice. Nutrients 2022; 14:nu14183730. [PMID: 36145106 PMCID: PMC9503887 DOI: 10.3390/nu14183730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/21/2022] [Accepted: 09/06/2022] [Indexed: 11/17/2022] Open
Abstract
Obesity is commonly accompanied by chronic tissue inflammation and leads to insulin resistance. Aerobic exercise is an essential treatment for insulin resistance and has anti-inflammatory effects. However, the molecular mechanisms of exercise on obesity-associated inflammation and insulin resistance remain largely unknown. Here, we evaluated the effects of aerobic exercise on inflammation and insulin resistance in skeletal muscles of high-fat diet (HFD) mice. Male C57BL/6J mice were fed a high-fat diet or a normal diet for 12 weeks, and then aerobic training was performed on a treadmill for 8 weeks. Body weight, fasting blood glucose, food intake levels, and glucose and insulin tolerance were evaluated. The levels of cytokines, skeletal muscle insulin resistance, and inflammation were also analyzed. Eight weeks of aerobic exercise attenuated HFD-induced weight gain and glucose intolerance, and improved insulin sensitivity. This was accompanied by enhanced insulin signaling. Exercise directly resulted in a significant reduction of lipid content, inflammation, and macrophage infiltration in skeletal muscles. Moreover, exercise alleviated HFD-mediated inflammation by suppressing the activation of the NF-κB pathway within skeletal muscles. These results revealed that aerobic exercise could lead to an anti-inflammatory phenotype with protection from skeletal muscle insulin resistance in HFD-induced mice.
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Militello R, Pinto G, Illiano A, Luti S, Magherini F, Amoresano A, Modesti PA, Modesti A. Modulation of Plasma Proteomic Profile by Regular Training in Male and Female Basketball Players: A Preliminary Study. Front Physiol 2022; 13:813447. [PMID: 35360242 PMCID: PMC8964093 DOI: 10.3389/fphys.2022.813447] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 01/20/2022] [Indexed: 11/13/2022] Open
Abstract
Monitoring fatigue and recovery during training periods contributes to identifying the best training methods to achieve sports performance. To date, little is known about sex-related differences in sports adaptations. The aim of the present study is to identify sex-related sports adaptation proteins in female basketball players and male basketball players using proteomics approach on plasma samples withdrawn from athletes during in-season training period but far from a competition. A cohort of 20 professional basketball players, 10 female (BF) and 10 male (BM), and 20 sedentary male (10 CM) and female (10 CF) as control, of comparable age and BMI, were involved in this study. Protein profiles of plasma samples obtained from BM, BF, CM, and CF were analyzed by two-dimensional electrophoresis (2-DE). Differentially expressed proteins were identified by mass spectrometry. The computational 2-DE gel image analysis pointed out 33 differentially expressed protein spots (ANOVA p-value < 0.05) and differences between male and female basketball players are more evident among the players than controls. The expression profile of 54.5% of the total proteins is affected by sports activity. Furthermore, 14 proteins are differentially expressed in basket female players in comparison with their relative controls while seven are differentially expressed in basket male players in comparison with their controls. In conclusion, we identify in female athletes a reduction in proteins related to transcription regulation, most of these modulate chronic inflammation confirming the anti-inflammatory effect of regular training in female muscle metabolism. In male and female athletes, we found a decrease in Transthyretin involved in muscle homeostasis and regeneration and Dermcidin a stress-induced myokine linked to inflammatory and it will be interesting to fully understand the role of its different isoforms in male and female skeletal muscle contraction.
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Affiliation(s)
- Rosamaria Militello
- Department of Biomedical, Experimental and Clinical Sciences "Mario Serio," University of Florence, Florence, Italy
| | - Gabriella Pinto
- Istituto Nazionale Biostrutture e Biosistemi, Rome, Italy.,Department of Chemical Sciences, Polytechnic and Basic Sciences School, University of Naples Federico II, Naples, Italy
| | - Anna Illiano
- Istituto Nazionale Biostrutture e Biosistemi, Rome, Italy.,Department of Chemical Sciences, Polytechnic and Basic Sciences School, University of Naples Federico II, Naples, Italy
| | - Simone Luti
- Department of Biomedical, Experimental and Clinical Sciences "Mario Serio," University of Florence, Florence, Italy
| | - Francesca Magherini
- Department of Biomedical, Experimental and Clinical Sciences "Mario Serio," University of Florence, Florence, Italy
| | | | - Pietro Amedeo Modesti
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Alessandra Modesti
- Department of Biomedical, Experimental and Clinical Sciences "Mario Serio," University of Florence, Florence, Italy
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Entezari M, Hashemi D, Taheriazam A, Zabolian A, Mohammadi S, Fakhri F, Hashemi M, Hushmandi K, Ashrafizadeh M, Zarrabi A, Ertas YN, Mirzaei S, Samarghandian S. AMPK signaling in diabetes mellitus, insulin resistance and diabetic complications: A pre-clinical and clinical investigation. Biomed Pharmacother 2022; 146:112563. [PMID: 35062059 DOI: 10.1016/j.biopha.2021.112563] [Citation(s) in RCA: 92] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 12/16/2021] [Accepted: 12/19/2021] [Indexed: 12/12/2022] Open
Abstract
Diabetes mellitus (DM) is considered as a main challenge in both developing and developed countries, as lifestyle has changed and its management seems to be vital. Type I and type II diabetes are the main kinds and they result in hyperglycemia in patients and related complications. The gene expression alteration can lead to development of DM and related complications. The AMP-activated protein kinase (AMPK) is an energy sensor with aberrant expression in various diseases including cancer, cardiovascular diseases and DM. The present review focuses on understanding AMPK role in DM. Inducing AMPK signaling promotes glucose in DM that is of importance for ameliorating hyperglycemia. Further investigation reveals the role of AMPK signaling in enhancing insulin sensitivity for treatment of diabetic patients. Furthermore, AMPK upregulation inhibits stress and cell death in β cells that is of importance for preventing type I diabetes development. The clinical studies on diabetic patients have shown the role of AMPK signaling in improving diabetic complications such as brain disorders. Furthermore, AMPK can improve neuropathy, nephropathy, liver diseases and reproductive alterations occurring during DM. For exerting such protective impacts, AMPK signaling interacts with other molecular pathways such as PGC-1α, PI3K/Akt, NOX4 and NF-κB among others. Therefore, providing therapeutics based on AMPK targeting can be beneficial for amelioration of DM.
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Affiliation(s)
- Maliheh Entezari
- Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Farhikhtegan Medical Convergence Sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Danial Hashemi
- Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Afshin Taheriazam
- Farhikhtegan Medical Convergence Sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Orthopedics, Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Amirhossein Zabolian
- Department of Orthopedics, School of Medicine, 5th Azar Hospital, Golestan University of Medical Sciences, Golestan, Iran
| | - Shima Mohammadi
- Kerman University of Medical Sciences, Kerman 7616913555, Iran
| | - Farima Fakhri
- Kerman University of Medical Sciences, Kerman 7616913555, Iran
| | - Mehrdad Hashemi
- Farhikhtegan Medical Convergence Sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Kiavash Hushmandi
- Department of Food Hygiene and Quality Control, Division of Epidemiology & Zoonosis, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Milad Ashrafizadeh
- Faculty of Engineering and Natural Sciences, Sabanci University, Orta Mahalle, Üniversite Caddesi No. 27, Orhanlı, Tuzla 34956, Istanbul, Turkey; Sabanci University Nanotechnology Research and Application Center (SUNUM), Tuzla 34956, Istanbul, Turkey
| | - Ali Zarrabi
- Department of Biomedical Engineering, Faculty of Engineering and Natural Sciences, Istinye University, Sariyer 34396, Istanbul, Turkey
| | - Yavuz Nuri Ertas
- Department of Biomedical Engineering, Erciyes University, Kayseri 38039, Turkey; ERNAM-Nanotechnology Research and Application Center, Erciyes University, Kayseri 38039, Turkey
| | - Sepideh Mirzaei
- Department of Biology, Faculty of Science, Islamic Azad University, Science and Research Branch, Tehran, Iran.
| | - Saeed Samarghandian
- Department of Basic Medical Sciences, Neyshabur University of Medical Sciences, Neyshabur, Iran.
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